package demoTest;

import java.util.*;

public class Demo01 {


    public static void change(Integer integer){
        integer = null;
    }

    public static void main(String[] args) {
        Iterator<Object> iterator = new ArrayList<>().iterator();

        LinkedList<Object> objects = new LinkedList<>();
        for (int i = 0; i < objects.size(); i++) {

        }

    }
}
